Carbon Steel 3 Piece Ball Valve BSPT
Technical Specification
- Body Material: Carbon Steel
- Seal Material: PTFE
- Sizes Available: 1/2" up to 3"
- Connection: Female BSPT Thread
- Pressure Rating:
- 1/4" to 1": 82 bar
- 1 1/4" to 1 1/2": 69 bar
- 2" to 3": 62 bar
- Operating Temperature: -25°C to +200°C
- Bore: Full Bore
- Features: 3-piece construction, locking device
Description
This high-pressure carbon steel 3-piece ball valve is engineered for demanding industrial pipework applications where reliability, safety, and ease of maintenance are essential. The 3-piece body construction allows the valve to be removed from the pipeline for inspection, cleaning, or service without disturbing the surrounding pipework, significantly reducing downtime and maintenance costs.
Featuring a stainless steel 316 ball and full-bore design, ensuring unrestricted flow and minimal pressure drop across the fitting. R-PTFE ball seats provide excellent chemical resistance and dimensional stability at elevated temperatures, while PTFE sealing components deliver a secure, leak-free seal throughout the rated operating range.
With a maximum pressure rating of 82 bar in smaller sizes and an operating temperature range of -25°C to +200°C, this valve is well suited to high-pressure steam, chemical processing, oil and gas, and general industrial service applications. A built-in locking device enables the valve to be secured in the open or closed position, making it particularly appropriate for installations requiring tamper resistance.
Typical Applications
Key Features & Benefits
- 3-piece Construction: Allows the valve internals to be accessed and serviced without removing the valve ends from the pipeline, minimising maintenance time and reducing installation disruption.
- Full-bore design: Provides unrestricted flow through the valve, minimising pressure drop.
- High Pressure Rating: Rated to 82 bar in sizes 1/4" to 1", this valve is capable of handling demanding high-pressure applications in industrial and process environments.
- Integrated Locking Device: Allows the valve to be secured in the open or closed position, supporting lockout procedures and providing tamper resistance in safety-critical installations.
- Stainless Steel 316 Ball and Stem: Delivers excellent corrosion and oxidation resistance, ensuring long service life even in aggressive media and high-temperature conditions.
Pressure & Temperature Relationship


Dimensions & Materials


| Part | Description | Material |
| 1 | Body | Carbon Steel |
| 2 | Ball Seat | R-PTFE (15%) |
| 3 | Ball | Stainless Steel (316) |
| 4 | Body Gasket | PTFE |
| 5 | Cap | Carbon Steel |
| 6 | Spring Washer | Stainless Steel (304) |
| 7 | Nut | Stainless Steel (304) |
| 8 | Bolt | Stainless Steel (304) |
| 9 | Stem | Stainless Steel (316) |
| 10 | Thrust Washer | PTFE |
| 11 | Stem Packing | PTFE |
| 12 | Gland Nut | Stainless Steel (304) |
| 13 | Handle | Stainless Steel (304) |
| 14 | Spring Washer | Stainless Steel (304) |
| 15 | Nut | Stainless Steel (304) |
| 16 | Lock Device | Stainless Steel (304) |
| 17 | Handle Cover | Plastic |
| Product Code | DN (") | d (mm) | L (mm) | H (mm) | W (mm) | Torque | Kv | Weight (kg) |
| 353758 | 1/2 | 15 | 75 | 53 | 118 | 5 | 35 | 0.45 |
| 353759 | 1 | 25 | 90 | 75 | 150 | 10 | 72 | 1.04 |
| 353760 | 1 1/4 | 32 | 110 | 80 | 150 | 14 | 105 | 1.65 |
| 353761 | 1 1/2 | 40 | 120 | 88 | 182 | 18 | 170 | 2.43 |
| 353762 | 2 | 50 | 140 | 95 | 182 | 25 | 275 | 3.52 |
| 353763 | 2 1/2 | 65 | 185 | 121 | 254 | 48 | 507 | 7.14 |
| 353764 | 3 | 80 | 205 | 135 | 254 | 75 | 905 | 11.85 |

